package com.orange.community.util;

/**
 * @author GaryGyp
 */
public class RedisKeyUtil {

    private static final String SPLIT = ":";

    private static final String PREFIX_ENTITY_LIKE = "like:entity";

    private static final String PREFIX_USER_LIKE = "like:user";

    // 被关注者
    private static final String PREFIX_FOLLOWEE = "followee";

    // 粉丝
    private static final String PREFIX_FOLLOWER = "follower";

    // 验证码
    private static final String PREFIX_KAPTCHA = "kaptcha";

    // 凭证
    private static final String PREFIX_TICKET = "ticket";

    // 缓存的用户
    private static final String PREFIX_USER = "user";

    // 统计UV（Unique Visitors）
    private static final String PREFIX_UV = "uv";

    // 统计DAU（Daily Active Visitors）
    private static final String PREFIX_DAU = "dau";

    // 帖子
    public static final String PREFIX_POST = "post";

    // 生成某个实体的赞
    // like:entity:entityType:entityId -> set(userId)
    public static String getEntityLikeKey(int entityType, int entityId) {
        return PREFIX_ENTITY_LIKE + SPLIT + entityType + SPLIT + entityId;
    }

    // 某个用户的赞
    // like:user:userId -> int
    public static String getUserLikeKey(int userId) {
        return PREFIX_USER_LIKE + SPLIT + userId;
    }

    // 某个用户关注的实体
    // followee:userId:entityType -> zset(entityId, now)
    public static String getFolloweeKey(int userId, int entityType) {
        return PREFIX_FOLLOWEE + SPLIT + userId + SPLIT + entityType;
    }

    // 某个实体所拥有的粉丝
    // follower:entityType:entityId -> zset(userId, now)
    public static String getFollowerKey(int entityType, int entityId) {
        return PREFIX_FOLLOWER + SPLIT + entityType + SPLIT + entityId;
    }

    // 登录验证码
    public static String getKaptchaKey(String owner) {
        return PREFIX_KAPTCHA + SPLIT + owner;
    }

    // 登录的凭证
    public static String getTicketKey(String ticket) {
        return PREFIX_TICKET + SPLIT + ticket;
    }

    // 用户
    public static String getUserKey(int userId) {
        return PREFIX_USER + SPLIT + userId;
    }

    // 单日uv的key
    public static String getUVKey(String date) {
        return PREFIX_UV + SPLIT + date;
    }

    // 区间uv（某几天之间的uv）
    public static String getUVKey(String startDate, String endDate) {
        return PREFIX_UV + SPLIT + startDate + SPLIT + endDate;
    }

    // 单日活跃用户
    public static String getDAUKey(String date) {
        return PREFIX_DAU + SPLIT + date;
    }

    // 区间dau
    public static String getDAUKey(String startDate, String endDate) {
        return PREFIX_DAU + SPLIT + startDate + SPLIT + endDate;
    }

    // 统计帖子分数
    public static String getPostScoreKey() {
        return PREFIX_POST + SPLIT + "score";
    }

}
